Signature Series Carbon Fiber Rear Diffuser – BMW F30 3 Series | Eterna Motorworks
Add the finishing touch to your F30’s rear profile with this Signature Series Carbon Fiber Rear Diffuser. Designed specifically to complement the M Sport rear bumper, this diffuser offers balanced dual-channel design for clean aggression and precise detailing.
Built from genuine carbon fiber and molded for OEM contour fitment, it integrates seamlessly with factory rear lower fascia while providing a polished motorsport aesthetic — ideal for daily drivers and show builds alike.
This diffuser is exclusively crafted by Eterna Motorworks. If you come across similar listings elsewhere, ensure you’re purchasing directly from us — the original source. We guarantee quality, authenticity, and the fitment we’re known for.
⸻
Key Features
• Signature Series dual-channel diffuser styling tailored for F30 M Sport bumper
• Constructed from real carbon fiber with a 2x2 twill weave pattern
• Gloss UV-resistant clear coat for long-term finish clarity
• Pre-molded for direct bolt-on or tape-in factory installation
• Lightweight structural integrity and refined rear airflow design
• Matte or forged carbon finish available upon request
⸻
Compatible Models
• BMW F30 3 Series (2012–2018, Sedan)
• Compatible with rear bumper dual outlet configurations in 340i, 335i, 330i, and M Sport trims
⸻
What’s Included
• (1) Signature Series Carbon Fiber Rear Dual-Channel Diffuser
• Pre-installed mounting tabs or adhesive mounting points (batch dependent)
• Installation hardware not included on most products
⸻
Why Buy From Eterna Motorworks
Eterna Motorworks is the standard in premium aftermarket automotive parts and services. With over a decade of hands‑on experience, we’ve earned the trust of enthusiasts and professional builders worldwide by delivering unmatched quality, precision fitment, and long-term reliability. Every product we offer is curated for styling, performance, and functional craftsmanship.
If you’re looking to elevate your build with genuine quality — welcome to the team.
⸻
Professional installation is highly recommended.
Installation hardware not included on most products.
For full fitment and store policy details, please refer to our policies before purchasing.
Worldwide shipping available upon request.
⸻
Your next mod starts here. Upgrade your build the right way with Eterna Motorworks.
Pairs well with
Signature Series Carbon Fiber Rear Diffuser – BMW F30 3 Series | Eterna Motorworks
FREE USA SHIPPING | On set items
EASY FINANCING | Apply at checkout
REPUTABLE SOURCE | Leading brands
Quick Answers
Will this fit my vehicle?
This part is made for the models listed above. If you’re unsure, send us your year, make, and model and we’ll confirm fitment for you.
What’s included?
You’ll receive exactly what’s shown. Hardware is not included unless the product description says otherwise.
How’s the install?
We recommend professional installation. If you’re local, you can book an install with us directly. Some parts may need trimming, drilling, or adjustment depending on your setup.
Do you ship internationally?
Yes, we ship worldwide. Contact us if you need help placing an international order.
Still have questions?
Reach out anytime. We’re here to help before and after your order.
FOLLOW US ON INSTAGRAM #BUILTBYETERNA